Double D handle



FIG. 1 is a top, front and right side perspective view of a double D handle, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in figures depict portions of the double D handle that form no part of the claimed design. 

CLAIM The ornamental design for a double D handle, as shown and described. 